hamilton



2 Sheets-Sheet l.

(No Model.)

E M HAMILTON TYPE WRITING MACHINE.

No. 430,777. Patented June 24,1890.

o wa@ INVENTOH WITNESS/5S.'

(No Model.) 2 sheets-sheet 2.

` E M HAMILTON TYPE WRITINGVMAGHINE.

No. 430,777. Patented Jun-e 24, 1890.

Nrrnn STATES rPATEiwit I FFlC@ TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 430,777, dated J une 24, 1890.

Application filed March 8, 1890- Serial No. 343,108. (No model.)v

To all whom, it `nutty concern:

Be it known that I, EMERY M. HAMILTON, of the city, county, and State of New York, a citizen of the United States, have invented certain new and useful Improvements in 'lype- Writing Machines, of which the following is a full, clear, and exact description. ref erence being had to the accompanying` drawings, forming part. of this specication.

My invention relates t0 a type-writing machine of the class commonlyknown as type bar machines, in which the printing-types are carried by vibratory type-hars, and in which the type-bars are usually arranged radially in a circular series, and have a common printing-point. at the center of the series, and with a series of key-levers which serve to actuate the type-bars through links or rods which connect the keylevers severally to the type-bars.

My invention consists in the combination, in a type-writing machine, of a circular series of radially-arranged type-bars, a correspending series of radially-arranged typebar brackets to which, on the sides thereof, respectively, the type-bars areseverally pivoted, a rigid annulus, upon which said brackets are seated at one edge, a flexible annular plate fitting to the opposite edge of said brackets throughout the series thereof, and screws passing through and adapted to bear upon said lieXible plate, and extending between the opposed faces of the adjacent brackets throughout the series thereof, and seated in said rigid annulus, the sides of each two of said screws being in contact peripherally with the opposite faces of the brackets between which they are located, and supporting them perpendicularly on their seat, as hereinafter set forth; and my invention also consists in the combination, with a typebar and a typebar support or bracket on which the type-bar has pivotal bearing, of a proj ection on the face of the support or bracket on which the type-bar is hung and located in the path of the movement of the type-bar when it vibrates reversely on its bearin g after vibrating in the direction to effect printing, as hereinafter described.

Figure 1 is a plan of a circular series of radially-arranged type-bars and their brackets containing my invention-and showing two key-levers and connected mechanism. Fig. 2 is a'vertical longitudinal section of a type-writing machine, showing the type-bars and their brackets containing my invent-ion. Fig. 3 is an enlarged plan, in detail, of a typebar and its bracket. Fig. 4 is an enlarged perspective view of the bracket. Fig. 5 is an enlarged side elevation of the typebar and bracket; and Fig. 6 is an end view of the bracket, partly in section.

The features of my presentinventimi are shown in the drawings in connection with4 certain novel features relating to the key-levers and to the lever-actuating mechanism generally; but as such features of the lever movement and key-levers constitute no part of my present invention they are not described herein, but are reserved herefrom and are fully set forth in another application for Letters Patent by me tiled February l0, 1890, Serial No. 339,771, of which they are thesubj ect-m atter.

A is a type-bar, and l-l is a supportingbracket, upon a side of which the type-bar is mounted to vibrate by means of a pivotal bearing c., as shown.

In carrying out my invention in a type writing machine the brackets B are arranged radially 'in a circular series, as shown in Fig. l, and are supported edgewise upon a rigid annulus C, which is adapted to receive and seat the bottom edges of the brackets,v

as shown.

C is an annular plate corresponding to the annulus C and adapt-ed to fit upon the entire circular series of the seated brackets B, on the top edges thereof, as shown. The annular plate C is flexible flatwise, and is preferably constituted of a continuous circular piece of thin sheet metal. Between the opposed sides of the adjacent brackets throughout the entire circular series thereof are located screws c, which pass through and have their heads bear upon the top face of the flexible annular plate C', and into and are seated at their lower ends in threaded apertures or recesses in the rigid annulus C. These screws are of such a diameter lor are, as is preferable, provided with sleeves c', as shown, of sncha diameter that said screws or sleeves, as the case may be, are peripherally in contact with the opposite faces of the brackets be- IOO tween which said screws are located throughout the circular series of the brackets.

The advantages of this described construction are that owing to the employment of the flexible annular plate C and the screws intermediate the brackets throughout the series, when it is desired to adjust one of the bracket-s of the series, either radially or laterally on its seat on the rigid annulus C,this may be accomplished without disturbing any other of the bracket-s of the series by loosen- `ing the two screws which are on opposite sides of the bracket, after preferably tightening somewhat the two screws next beyond the said loosened screws,on either side thereof, in the series, when the tendency of the tight screws will be to notI only bind the annular plate C snugly to the brackets on either side of the one desired to be adjusted, and thus maintainsuch brackets rigidly in position, but at the'same time to somewhat lieX the annular plate C upward between said tight screws at the point. where the loosened screws are located and over the place occupied by the bracket which is desired to be adjusted; and, furthermore, owing to the peripheral contact of the screws or their' sleeves with the opposite faces Vof the adjacent brackets, between which the screws are located throughout the series` the brackets are thereby supported perpendicularly on their seat on the annulus C, and are prevented from having lateral movement bodily on their seat on said annulus., It is evident that in assembling the brackets B, carrying severally the respective type-bars into the stated circular series on the annulus C, the advantage of being able to adjust the brackets individually, radially, and laterally without disturbing any other of the brackets-of the series, so that the vibration of the type-bars may effect printing accurately at a common printing-point is very great from an economical as well as a mechanical point of view.

I arrange a-projection b on that face of the bracket B on which the type-bar is pivoted, locating said projection relatively to the typebar, so that it will be met by and stop said type-bar as it vibrates reversely after vibrating in the direction to effect printing, thus constituting a back-stop7 to the type-bar. This projection may be made in the same piece as the bracket in the form of a lug or earturned angularly to the bracket, as shown.

lVhatl claim as my invention, and desire y to secure by Letters Patent. is-

l. In a type-writing machine, the combination of a circular series of radially-arranged type-bar brackets, a corresponding series of radially-arranged type-bars severally pivoted to the respective brackets on the sides thereof, a rigid annulus upon which saidbrackets are seated at one edge, a flexible annular plate fitting to the opposite edge of said brackets throughout the series thereof, and screws passing through and adapted to bear upon said iiexible plate and extending between the opposed faces of the adjacent brackets throughout the series thereof and seated in said rigid annulus, the sides of each two of said screws being in contact peripherally with the opposite faces of the brackets between which they are located and supporting them perpendieularly on their seat, substantially as and for the purpose set forth.`

2. In a type-writing machine, the combination ofv a circular series of radially-arranged type-bars severally pivoted to the respective brackets on the sides thereof, a rigid annulus upon which said brackets are seated at one edge, a flexible annular plate fitting to the opposite edge of the brackets throughout the series thereof, screws passing through and adapted to bear upon said flexible plate and extending between the opposed faces ofL the adjacent brackets throughoutthe series there-- of and seated in said rigid annulus, and sleeves on each of said screws, the sides of each two of which sleeves are in contact peripherally with the opposite faces of the brackets between which they are located, an d thereby support said brackets perpendicularly on their seat, substantially as and for the purpose set forth. 4

3. In a type-writing machine, the combination, with a type-bar and a type-bar support or bracket on which the type-bar has pivotal bearing, of a projection on rthe face of the support or bracket on which the type-bar is hung and located in the path of the movement of said type-bar when it vibrates reversely on its bearing after vibrating in the direction to effect printing, substantially as set forth.

EMERY M. HAMILTON.

Vitnesses: y

C. W. BENJAMIN, A. T. FALEs.

IOO 

